Just listened with a mechanics scope and injector #4 sounds very light and does not make a good click like injectors 5&6 do.
So that would be an injector issue.
Am I correct in thinking this?
So I need 1 injector, 1 intake gasket kit, would be good to throw on 6 new plus while I have it apart even tho this is just a flip car, for the extra $50 I think it is the right thing to do.